142nd APHA Annual Meeting and Exposition

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Differences in time use patterns which may explain the increased risk of injury for Multiple Job Holders compared with Single Job Holders: Findings from the American Time Use Survey

142nd APHA Annual Meeting and Exposition (November 15 - November 19, 2014): http://www.apha.org/events-and-meetings/annual
Tuesday, November 18, 2014 : 12:30 PM - 12:42 PM

Helen R. Marucci-Wellman, ScD , Center for Injury Epidemiology, Liberty Mutual Research Institute for Safety, Hopkinton, MA
Tin-Chi Lin, PhD , Center for Injury Epidemiology, Liberty Mutual Research Institute for Safety, Hopkinton, MA
Joanna L. Willetts, MS , Center for Injury Epidemiology, Liberty Mutual Research Institute for Safety, Hopkinton, MA
Melanye J. Brennan, MS , Center for Injury Epidemiology, Liberty Mutual Research Institute for Safety, Hopkinton, MA
Santosh K. Verma, ScD, MPH, MBBS , Center for Injury Epidemiology, Liberty Mutual Research Institute for Safety, Hopkinton, MA
Audio (mp3) recording Recorded Presentation (mp4)
In 2012, 8.5% of the employed workforce in the U.S. worked in more than one job during a one-week period.  Using data from the U.S. National Health Interview Survey, we found that workers with more than one job in a one-week period (MJH) had a higher risk of injury both on and off the job compared with single job holders (SJH). 

Using information from the American Time Use Survey 2003–2011, we explored differences in time use patterns between MJH and SJH which could influence the potential for fatigue or other factors contributing to injury.  We classified workers into 6 workgroups depending on whether they were a SJH or MJH and whether they worked their primary, other, multiple or neither job on the diary day.

We found MJH working multiple jobs on the diary day worked, on average, more than 2 additional hours/day (2.25 hours weekday, 2.75 hours weekend, p<.05), odd hours of the day, with more work travel time (10 minutes weekday, 9 minutes weekend, p<.05) and less sleep (-45 minutes, weekday, -62 minutes, weekend, p<.05) and time for other household and leisure activities than SJH (p<.05).

There were large differences in time use for MJH compared with SJH, depending on whether they worked in one or more jobs, or no jobs during the diary day. MJH may be at heightened risk of fatigue and injury due to long work hours concurrent with long daily commutes, working multiple shifts and less sleep and leisure time for recovery.

Learning Areas:

Epidemiology
Occupational health and safety
Public health or related organizational policy, standards, or other guidelines
Public health or related public policy
Public health or related research

Learning Objectives:
Compare time use patterns which may be associated with fatigue and/or injru for multiple job holders compared with single job holders in the U.S.

Keyword(s): Occupational Health and Safety

Presenting author's disclosure statement:

Qualified on the content I am responsible for because: Dr. Helen Marucci-Wellman is the Principal Investigator on the project. She completed her education at the University of Massachusetts, Lowell, receiving her Doctor of Science degree in epidemiology in 2008 from the work environment program and M.S. in work environment, ergonomics/industrial hygiene in 1995. Dr. Marucci-Wellman has a strong background in occupational health surveillance, data analysis, and ergonomics.
Any relevant financial relationships? No

I agree to comply with the American Public Health Association Conflict of Interest and Commercial Support Guidelines, and to disclose to the participants any off-label or experimental uses of a commercial product or service discussed in my presentation.

Back to: 4237.0: Occupational injuries